4391328330944 has 56 divisors (see below), whose sum is σ = 9231071380848. Its totient is φ = 2065513349120.

The previous prime is 4391328330943. The next prime is 4391328330947. The reversal of 4391328330944 is 4490338231934.

It is a super-2 number, since 2×4391328330944² (a number of 26 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4391328330943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1294367 + ... + 3233889.

Almost surely, 2^{4391328330944} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4391328330944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4615535690424).

4391328330944 is an abundant number, since it is smaller than the sum of its proper divisors (4839743049904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4391328330944 is a wasteful number, since it uses less digits than its factorization.

4391328330944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941633 (or 1941623 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 53.

The spelling of 4391328330944 in words is "four trillion, three hundred ninety-one billion, three hundred twenty-eight million, three hundred thirty thousand, nine hundred forty-four".